Phoenix all the way
I have not used it yet, mine is arriving next week.
But from what i have heard it is the BEST
And you can also play online with other guys, all flying at the same field.
The phoenix website also releases updates all the time, that you can download for free
Just make sure to get the right cable for your TX.
As far as i know these sims also require a half decent pc setup, enough ram and a decent graphics card.